Cast Iron Grates

Our Cast Iron Grates are available for our Rain Drain product, but can be used in other applications. The 9”x13” is the ideal size for the Rain Drain solution. The 9”x9” and 12”x12” were designed for our 9” and 12” square catch basins.


  • Available in 9” x 9”
  • Available in 12” x 12”
  • Available in 9” x 13”


Part Number

  • 3035-1 (Cast Iron Grate 8 1/2" x 13 1/8")
  • 3035 (Plastic Rain Drain Grate)

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Rain Drainage Boxes

Solve drainage problems anywhere with our Rain Drain. It’s easy to use, installs in minutes and blends with your landscape. We sell the Steel forms so you can make your own Rain Drainage Boxes. We have sold more rain drain molds than any other manufacturer. Once you start making your own Drain Boxes and start making additional money, we supply the grates that go with it.

U.S. Patent No# 5,130,016

Goes Well With

Square Catch Basins

Offered in two sizes, Polylok manufactures the most versatile Catch Basin on the market. The basin comes complete with either a black or green grate, and two seals that accept 2", 3", 4", and corrugated pipe. You can choose your inlet and outlet heights, and it can accept one inlet and up to three outlets.